DCT has tendency to produce higher IOP results
Intraocular pressure (IOP) is higher when measured by dynamic contour tonometry (DCT) rather than Goldmann applanation tonometry (GAT).
Intraocular pressure (IOP) is higher when measured by dynamic contour tonometry (DCT) rather than Goldmann applanation tonometry (GAT), according to a study published in the Journal of Glaucoma.
An investigation led by Dr Guy Regev, Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, USA, assessed the central corneal thickness (CCT) and GAT as well as DCT measurements in 116 open-angle glaucoma patients. GAT and DCT were evaluated in a randomized order, along with CCT in a single study visit. The agreement between GAT and DCT measurements were evaluated using Bland-Altman plots and the influence of CCT on IOP measurements was evaluated by multivariate regression analysis.
The findings revealed that using DCT to measure IOP was significantly higher than in GAT. There was a strong positive correlation between DCT and GAT IOP measurements in open-angle glaucoma patients. The Bland-Altman data demonstrated a variance on the amount of disagreement between the IOP measurement methods.
Both GAT and DCT measurements were not influenced by CCT. The results suggest there are alternative factors other than CCT as to why DCT produces significantly higher IOP results.
AAO 2024: Transient vision loss with Alexander Fein, MD
October 21st 2024Alexander Fein, MD, spoke with the Eye Care Network to share how to approach a patient presenting with transient vision loss, what this type of vision loss can mean, and what additional testing might be needed to determine the best plan for care.
AAO 2024: Optimal pupil size reduction percentage for near vision improvement in presbyopia
October 21st 2024Jennifer Loh, MD, shared insights from on her presentation at the American Academy of Ophthalmology meeting in Chicago on the effects of CSF-1, which is the lowest effective concentration of pilocarpine approved in the United States.
